The latest video coding standard H.264 has been recently approved and has already been adopted for numerous applications including HD-DVD and satellite broadcast. To allow interconnectivity between different applications using H.264, transcoding will be a key factor. When requantizing a bit stream the incoming coding decisions are usually kept unchanged to reduce the complexity, but it can have a major impact on the coding efficiency. This paper proposes a novel algorithm for mode refinement of intra prediction in the case of requantization of H.264 intra frames. The proposed approach gives a comparable quality to a full search for a fraction of its complexity by exploiting the statistical properties of the mode distribution.
|Translated title of the contribution||An efficient complexity-scalable video transcoder with mode refinement|
|Title of host publication||2006 IEEE International Symposium on Circuits and Systems, 2006 (ISCAS 2006) Kos, Greece|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||4459 - 4462|
|Number of pages||4|
|Publication status||Published - May 2006|
|Event||International Symposium on Circuits and Systems, 2006 - Kos, Greece|
Duration: 21 Jan 2006 → 24 Jan 2006
|Conference||International Symposium on Circuits and Systems, 2006|
|Period||21/01/06 → 24/01/06|
Bibliographical noteRose publication type: Conference contribution
Sponsorship: The work is funded by 3CRL ROAM4G.
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